Dozens of vehicles broke down after motorists used diesel pumps at the station in Branksome in Poole, Dorset, on 18 September.
Police think the contamination occurred when fuel was stolen from a tanker in Grays, Essex, and replaced with non-road diesel before heading to Dorset.
Read more: http://www.bbc.com/news/uk-england-dorset-30795957
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